| A | B |
|---|
| scala media | portion of membranous labyrinth in the cochlea |
| basilar membrane | separates scala media from scala tympani |
| Reissner's membrane | separates scala media from scala vestibuli |
| vestibule | inner ear chamber that 1st receives stapes vibrations |
| apex | top of the cochlea |
| base | bottom of the cochlea; closer to middle ear |
| modiolus | internal bony core around which cochlea coils |
| spiral lamina | thin bony shelf protruding from modiolus |
| spiral lamina | internal attachment point of basilar membrane |
| spiral ligament | outside attachment point of basilar membrane |
| Cranial Nerve VIII | cochleo-vestibular nerve |
| scala tympani | separated from middle ear by round window |
| endolymph | fluid present in the scala media |
| helicotrema | opening connecting SV and ST at apex of cochlea |
| stria vascularis | lines the spiral ligament in scala media |
| Organ of Corti | sensory end organ of hearing |
| Inner Hair Cells | gourd shaped sensory cells |
| Outer Hair Cells | have stereocilia arranged in Ws or Vs |
| tectorial membrane | attached internally to spiral limbus |
| outer hair cells | tallest stereocilia contact tectorial membrane |
